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000830443 1001_ $$0P:(DE-Juel1)165688$$aBeez, Alexander$$b0$$eCorresponding author
000830443 245__ $$aInsight into the reaction mechanism of (La0.58Sr0.40)(Co0.20Fe0.80)O3-δ cathode with volatile chromium species at high current density in a solid oxide fuel cell stack
000830443 260__ $$aPennington, NJ$$bElectrochemical Soc.$$c2017
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000830443 520__ $$aAnode-supported solid oxide fuel cells with different Cr protection layers on the metallic interconnect were operated in a short stack at 700°C for 1240 h. The current density was raised sequentially from 0.5 A cm−2 during the first 240 h of operation to 0.75 A cm−2 for a further 1000 h. After operation, the (La,Sr)(Co,Fe)O3-δ (LSCF) cathode layers were analyzed with respect to Cr interaction by both wet chemical and microstructural methods. For cells equipped with interconnects coated with a dense APS protection layer, the amount of Cr on the cathode was in the range of a few μg. For cells with a porous WPS coating on the interconnect, the amount of Cr was in the range of 110–160 μg cm−2 and Cr-containing phases were detected by SEM analysis both on top of the cathode layer and also at the LSCF/GDC interface, which has rarely been observed before. In addition, a deterioration of the cathode microstructure near the LSCF/GDC interface was observed. With respect to the high current density during operation, a theory was developed which explains both the Cr deposition at the LSCF/GDC interface and also the deterioration of the cathode.
000830443 536__ $$0G:(DE-HGF)POF3-135$$a135 - Fuel Cells (POF3-135)$$cPOF3-135$$fPOF III$$x0
000830443 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1
000830443 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x2
000830443 7001_ $$0P:(DE-Juel1)166023$$aYin, Xiaoyan$$b1$$ufzj
000830443 7001_ $$0P:(DE-Juel1)129636$$aMenzler, Norbert H.$$b2$$ufzj
000830443 7001_ $$0P:(DE-Juel1)130979$$aSpatschek, Robert$$b3$$ufzj
000830443 7001_ $$0P:(DE-Juel1)129591$$aBram, Martin$$b4$$ufzj
000830443 773__ $$0PERI:(DE-600)2002179-3$$a10.1149/2.0051710JES$$n10$$pF3028-F3034$$tJournal of the Electrochemical Society$$v164$$x0013-4651$$y2017
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